Observational study on formation of a localized rainfall on a basin with heat and aridity on days of weak synoptic disturbance in summer
T Sano, S Oishi - Journal of the Meteorological Society of Japan. Ser …, 2018 - jstage.jst.go.jp
T Sano, S Oishi
Journal of the Meteorological Society of Japan. Ser. II, 2018•jstage.jst.go.jpAbstract 29 To elucidate the formation of a localized rainfall on a basin with heat and aridity
30 under weak synoptic disturbance in summer, the characteristics of atmospheric 31
conditions on the Kofu Basin preceding the appearance of primary precipitating cells 32
were described from 23 localized rainfall events on the Kofu Basin on days of weak 33
synoptic disturbance at the surface from 1 June to 30 September in 2012 to 2014. 34
Furthermore, using the case study conducted on 25 July 2014, the formation of the 35 …
30 under weak synoptic disturbance in summer, the characteristics of atmospheric 31
conditions on the Kofu Basin preceding the appearance of primary precipitating cells 32
were described from 23 localized rainfall events on the Kofu Basin on days of weak 33
synoptic disturbance at the surface from 1 June to 30 September in 2012 to 2014. 34
Furthermore, using the case study conducted on 25 July 2014, the formation of the 35 …
Abstract 29 To elucidate the formation of a localized rainfall on a basin with heat and aridity 30 under weak synoptic disturbance in summer, the characteristics of atmospheric 31 conditions on the Kofu Basin preceding the appearance of primary precipitating cells 32 were described from 23 localized rainfall events on the Kofu Basin on days of weak 33 synoptic disturbance at the surface from 1 June to 30 September in 2012 to 2014. 34 Furthermore, using the case study conducted on 25 July 2014, the formation of the 35 atmospheric conditions was described from the standpoint of moisture behavior. 36 Owing to the thermal contrast between the Kofu Basin with heat and aridity and 37 the outside environment, the south-component wind blowing in the valley 38 connecting it to the coastal region of Suruga Bay and the east-component wind 39 blowing in the valley connecting it to the Kanto Plain entered the Kofu Basin as 40 southwesterly wind and southeasterly wind, respectively, which caused an increase 41 in the water vapor mixing ratio and a slight decrease in temperature at the surface. 42 After that, the amount of precipitable water vapor derived by the global navigation 43 satellite system observation (GNSS-PWV) at Nakamichi in the central region of the 44 Kofu Basin increased abruptly after the moderate increase in GNSS-PWV at all the 45 observation points on the Kofu Basin. Finally, a cloud appeared over the local region 46 between the southwesterly wind and the southeasterly wind; the precipitating cells 47 appeared here at 3.25 to 6.25 km above sea level. 48
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